US Airways is running a three-day special on purchasing memberships to their airport club lounge. Since Continental is part of the Star Alliance program, the membership can also be used at Continental and United lounges (and all other Star Alliance partners domestic and international).
This membership is for one person, but you can add a spouse for an additional $225. For the frequent traveller, this is a great deal! For the infrequent traveller you might be better off purchasing one-day passes in advance online for $29 ($50 if purchased at the lounge at the airport). If you will use the lounge more than 8 times in the next 12 months, the annual pass is well worth it!
Click here to purchase the pass.